The culprits

• "considered by some"
• "considered by many"

The solutions

Examples

• BitchX's graphical interface is considered by some to be not as neat as X-Chat, another major GTK+ IRC client.

1. BitchX's graphical interface is not as popular as X-Chat, another GTK+ IRC client.
2. BitchX's graphical interface is not as mature as X-Chat's (another GTK+ IRC client).